MARK J SEIFERT MD
NPI 1942201694
Internal Medicine - Clinical Cardiac Electrophysiology in Phoenix, AZ

Active since August 03, 2005PECOS EnrolledAccepts Medicare Assignment
9250 N 3RD STREET, SUITE 3010, PHOENIX, AZ 85020(602) 861-1168(602) 861-1763 Get Directions Write a Review

NPPES record last updated: September 13, 2013. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Mark J Seifert Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MARK J SEIFERT MD (NPI 1942201694) is an individual clinical cardiac electrophysiology provider in Phoenix, Arizona, licensed in Arizona (33429) and active in the NPI registry since August 2005. He is enrolled in Medicare PECOS and is a graduate of Johns Hopkins University School Of Medicine (1989).

NPPES Registry Identity

NPI1942201694
Entity TypeIndividualMale
Primary Taxonomy207RC0001X
Provider Legal NameMARK J SEIFERTCredential: MD
Location Address9250 N 3RD STREET, SUITE 3010Phoenix, AZ 85020-2425
Mailing Address2500 W Utopia Rd, Ste. 100Phoenix, AZ 85027-4171 · (623) 434-6200 · Fax (623) 434-6164
Fax(602) 861-1763
Sole ProprietorNo
Medical School CMSJohns Hopkins University School Of MedicineGraduated 1989
Enumeration DateAugust 3, 2005
Last NPPES UpdateSeptember 13, 2013
NPI 1942201694 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

Primary SpecialtyInternal Medicine · Clinical Cardiac ElectrophysiologyAllopathic & Osteopathic Physicians
Taxonomy Code207RC0001X
License Licensed in AZ · 33429
Definition
A field of special interest within the subspecialty of cardiovascular disease, specialty of Internal Medicine, which involves intricate technical procedures to evaluate heart rhythms and determine appropriate treatment for them.
Also ListedInternal Medicine · Cardiovascular DiseaseTaxonomy 207RC0000X · License 33429 (AZ)
9250 N 3RD STREET, Phoenix, AZ 85020

Other Identifiers 5

Medicare UPINF29825AZ
Medicaid363599AZ
Medicare PINZ140390AZ
OtherP00162117AZ · Railroad Medicare
OtherWCSKQAZ · Sun Health Group #

Accepted Insurance

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

Mark J Seifert Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID446247563
PECOS Enrollment IDI20041124000721
Eligible to Order & Refer Part B Labs & Imaging Durable Medical Equipment Home Health Agency Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 31

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Evaluation of single, dual, multiple lead or leadless pacemaker system or implantable defibrillator system, remote up to 90 days 93296
This procedure involves remotely monitoring your pacemaker or implantable defibrillator system. Over a 90-day period, we check the device's performance and your heart's activity. This helps ensure the device is functioning properly and providing the best possible support for your heart health.
1,877 services542 patients
Evaluation of single, dual, multiple lead or leadless pacemaker system, remote up to 90 days 93294
This procedure evaluates your pacemaker system remotely for up to 90 days. It checks whether single, dual, multiple lead, or leadless pacemakers are working properly. It's a safe, convenient way to ensure your heart device is functioning optimally.
1,439 services416 patients
Evaluation of cardiac rhythm monitor system, remote up to 30 days 93298
This procedure involves remotely monitoring your heart rhythm for up to 30 days. A small device will record your heart's activity, which can be accessed by your healthcare team. This aids in diagnosing any irregularities or issues with your heart function.
736 services92 patients
Evaluation of single, dual, or multiple lead implantable defibrillator system, remote up to 90 days 93295
This procedure involves remotely monitoring your implantable defibrillator system, which can have single, dual, or multiple leads. Over a period of up to 90 days, the system's performance is evaluated to ensure it's working properly and providing the necessary heart rhythm support.
445 services128 patients
Programming of dual lead pacemaker system 93280
Programming of a dual lead pacemaker system is a procedure to adjust your heart's pacemaker settings. This process involves a small device, called a programmer, that communicates with your pacemaker to ensure it's working optimally for your heart's needs.
354 services266 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
192 services166 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 85020 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$127.71 typical visit price
range $55.44 – $168.60
Typical copayment $31.92 (range $13.86 – $42.15)
Most-billed visit code 99204
Established Patient
$98.00 typical visit price
range $17.72 – $137.41
Typical copayment $24.50 (range $4.43 – $34.35)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 5

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Pathology (Anatomic Pathology & Clinical Pathology)
9250 N 3RD STREET, SUITE 4000
PHOENIX, AZ 85020
Pathology (Anatomic Pathology & Clinical Pathology)
9250 N 3RD STREET, SUITE 4000
PHOENIX, AZ 85020
Orthopaedic Surgery (Orthopaedic Surgery of the Spine)
9250 N 3RD STREET, SUITE 2020
PHOENIX, AZ 85020
Pathology (Anatomic Pathology & Clinical Pathology)
9250 N 3RD STREET, SUITE 4000
PHOENIX, AZ 85020
Pathology (Anatomic Pathology & Clinical Pathology)
9250 N 3RD STREET
PHOENIX, AZ 85020

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Mark Seifert's NPI number?

The NPI number for Mark Seifert is 1942201694. It was assigned to this individual provider in the NPPES registry on August 3, 2005.

Where is Mark Seifert located?

Mark Seifert practices at 9250 N 3rd Street Suite 3010, Phoenix, AZ 85020. The listed phone number is (602) 861-1168.

What is Mark Seifert's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Clinical Cardiac Electrophysiology, with taxonomy code 207RC0001X.

Is Mark Seifert enrolled in Medicare?

Yes. Mark Seifert is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Mark Seifert accept?

Health plans from Blue Cross Blue Shield of Arizona and Oscar Health Plan, Inc. list Mark Seifert as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Mark Seifert was last updated on September 13, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.